A CO2 membrane separation enrichment device

Abstract

The utility model discloses a kind of for CO2 membrane separation enrichment device, including outer shell, the two sides of the outer shell are respectively communicated with gas inlet pipe and enrichment gas discharge pipe, the right rear end of the enrichment gas discharge pipe is communicated with tail gas discharge pipe, the inside of the outer shell is equipped with fixed frame, the inside of the fixed frame includes multiple parallelly arranged diaphragms, gas distribution plate is arranged between the diaphragm.The utility model can make the gas entering diaphragm evenly distributed by setting gas distribution plate, improve the effective utilization of membrane, to improve the separation efficiency and enrichment concentration of CO2, using slidable fixed frame and slider structure, so that the replacement and maintenance of diaphragm are more convenient and fast, reduce downtime and operating cost, gas distribution plate uses porous ceramic material and is treated specially, not only enhance the uniformity of gas distribution, also improve the anti-pollution ability of membrane, prolong the service life of diaphragm.

Description

Technical Field

[0001] This utility model relates to the field of gas separation technology, specifically to a CO2 membrane separation and enrichment device. Background Technology

[0002] With increasing global attention to environmental protection and sustainable development, reducing carbon dioxide (CO2) emissions has become an important task. Among the many CO2 separation and enrichment technologies, membrane separation technology has attracted much attention due to its advantages such as simple operation, low energy consumption, and compact equipment. However, existing CO2 membrane separation devices have some problems in practical applications. The separation efficiency of the membrane modules needs to be improved, making it difficult to achieve the ideal CO2 enrichment concentration. The uneven gas distribution in the device results in low membrane utilization. At the same time, the maintenance and replacement of membrane modules are relatively complex, increasing operating costs and downtime. Utility Model Content

[0003] The purpose of this invention is to provide a CO2 membrane separation and enrichment device that has the advantages of improving separation efficiency and enrichment concentration, and improving gas distribution uniformity.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a CO2 membrane separation and enrichment device, comprising an outer shell, an inlet pipe and an enriched gas outlet pipe respectively connected to both sides of the outer shell, an exhaust gas outlet pipe connected to the right rear end of the enriched gas outlet pipe, a fixing frame installed inside the outer shell, the fixing frame including multiple parallel membranes inside, a gas distribution plate disposed between the membranes, multiple gas through holes evenly distributed on the gas distribution plate, a slider fixedly installed at the bottom of the fixing frame, a sliding rod slidably installed at the bottom of the slider, and the bottom of the sliding rod connected to the bottom of the inner cavity of the outer shell.

[0005] As a preferred embodiment, a sealing cover is provided on the top of the outer casing, and connecting seats are fixedly installed on both the front and rear sides of the top of the fixing frame. A snap-fit ​​block is snapped into the inside of the connecting seat through a snap-fit ​​groove, and the upper end of the snap-fit ​​block is connected to the bottom of the sealing cover.

[0006] As a preferred embodiment, guide vanes are fixedly installed at both the front and rear ends of the left side of the inner cavity of the outer shell, and the guide vanes are symmetrically distributed on the outside of the right end of the air intake pipe.

[0007] As a preferred embodiment, filling pads are installed on both the front and rear sides of the inner cavity of the outer shell, and the inner side of the filling pads is in contact with the outer side of the fixing frame.

[0008] As a preferred embodiment, a positioning frame is fixedly installed on the front and rear sides of the left end of the inner cavity of the outer shell and on the right side of the guide plate. A support spring is fixedly installed inside the positioning frame, and a fastening plate is fixedly installed on the right end of the support spring. The right side of the fastening plate is engaged with the protruding part on the left side of the fixing frame.

[0009] As a preferred embodiment, the fixing frame is rectangular in shape and covers the outside of the diaphragm and gas distribution plate, while the upper end of the fixing frame is divided into snap-fit ​​installation.

[0010] As a preferred embodiment, the top of the sealing cover is provided with an inspection port, and the top of the inspection port is sealed with a cover plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model enables uniform distribution of gas entering the membrane by setting a gas distribution plate, thereby improving the effective utilization rate of the membrane and thus enhancing the separation efficiency and enrichment concentration of CO2. The use of a sliding fixing frame and slider structure makes membrane replacement and maintenance more convenient and quick, reducing downtime and operating costs. The gas distribution plate is made of porous ceramic material and has undergone special treatment, which not only enhances the uniformity of gas distribution but also improves the membrane's anti-fouling ability and extends the service life of the membrane.

[0013] 2. This utility model uses a rectangular mounting bracket to cover the outside of the diaphragm and gas distribution plate, providing physical protection for them and preventing damage from collisions, scratches, or other external objects. This ensures the integrity and stability of the diaphragm and gas distribution plate, thereby guaranteeing the normal operation of CO2 separation and enrichment. The upper part of the mounting bracket is installed using a snap-fit ​​method, which makes installation and disassembly simple and quick, requiring no complicated tools or operations. When it is necessary to replace or repair the diaphragm or gas distribution plate, the mounting bracket can be quickly opened, improving maintenance efficiency and reducing downtime of the device. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0015] Figure 2 This is a first-person perspective structural perspective view of the present invention;

[0016] Figure 3 This is a second-view perspective structural perspective view of the present invention;

[0017] Figure 4 This is a diagram showing the internal structure of the outer shell of this utility model;

[0018] Figure 5 This is a cross-sectional view of the internal structure of the outer shell of this utility model;

[0019] Figure 6 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0020] In the diagram: 1. Outer shell; 2. Inlet pipe; 3. Enriched gas outlet pipe; 4. Exhaust gas outlet pipe; 5. Diaphragm; 6. Gas distribution plate; 7. Gas through hole; 8. Fixing bracket; 9. Sealing cover; 10. Connecting seat; 11. Clip block; 12. Guide plate; 13. Filler pad; 14. Positioning bracket; 15. Support spring; 16. Fastening plate; 17. Slider; 18. Slide rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0023] Example 1:

[0024] Please see Figure 1 As shown, this utility model provides a CO2 membrane separation and enrichment device, including an outer shell 1. An inlet pipe 2 and an enriched gas outlet pipe 3 are respectively connected to both sides of the outer shell 1. The right rear end of the enriched gas outlet pipe 3 is connected to a tail gas outlet pipe 4. A fixing frame 8 is installed inside the outer shell 1. The fixing frame 8 includes multiple parallel membranes 5 inside. A gas distribution plate 6 is arranged between the membranes 5. Multiple gas through holes 7 are evenly distributed on the gas distribution plate 6. A slider 17 is fixedly installed at the bottom of the fixing frame 8. A sliding rod 18 is slidably installed at the bottom of the slider 17. The bottom of the sliding rod 18 is connected to the bottom of the inner cavity of the outer shell 1.

[0025] This technical solution, by setting up a gas distribution plate 6, enables the gas entering the membrane 5 to be evenly distributed, improving the effective utilization rate of the membrane, thereby enhancing the separation efficiency and enrichment concentration of CO2. The use of a sliding fixing frame 8 and slider 17 structure makes the replacement and maintenance of the membrane 5 more convenient and quick, reducing downtime and operating costs. The gas distribution plate 6 is made of porous ceramic material and has undergone special treatment, which not only enhances the uniformity of gas distribution but also improves the membrane's antifouling ability and extends the service life of the membrane 5.

[0026] Example 2:

[0027] Based on Embodiment 1, this utility model is as follows: Figure 2 As shown, a sealing cover 9 is provided on the top of the outer shell 1, and connecting seats 10 are fixedly installed on the front and rear sides of the top of the fixing frame 8. A snap-fit ​​block 11 is snap-fitted into the inside of the connecting seat 10 through a snap-fit ​​groove. The upper end of the snap-fit ​​block 11 is connected to the bottom of the sealing cover 9. A guide plate 12 is fixedly installed on the front and rear ends of the left side of the inner cavity of the outer shell 1. The guide plates 12 are symmetrically distributed on the outside of the right end of the air intake pipe 2.

[0028] Adopting such Figure 1 The technical solution shown is that the sealing cover 9 is installed on the top of the fixed frame 8 by snapping the connecting block 11 to the connecting seat 10. This method does not require complicated tools and complicated operating procedures. When it is necessary to inspect, maintain or replace parts inside the device, the sealing cover 9 can be quickly removed. The operation is simple and can effectively reduce downtime and improve work efficiency. After the snapping block 11 is accurately snapped into the snapping groove of the connecting seat 10, it can ensure that the sealing cover 9 and the outer shell 1 are tightly fitted to form a good sealing effect. This helps to prevent CO2 or other gas leakage, ensure the normal flow of gas inside the device and the stability of the separation process, and also avoid the harm to the environment and operators caused by the leakage of harmful gases.

[0029] Secondly, in the technical solution, filling pads 13 are installed on both the front and rear sides of the inner cavity of the outer shell 1, and the inner side of the filling pads 13 is in contact with the outer side of the fixing frame 8; positioning frames 14 are fixedly installed on the front and rear sides of the left end of the inner cavity of the outer shell 1 and on the right side of the guide plate 12. A support spring 15 is fixedly installed inside the positioning frame 14, and a fastening plate 16 is fixedly installed on the right end of the support spring 15. The right side of the fastening plate 16 is engaged with the protruding part on the left side of the fixing frame 8.

[0030] Its adoption is as follows Figure 1The technical solution shown has a filling pad 13 that fits snugly against the outside of the mounting bracket 8, effectively filling the gaps between the outer casing 1 and the mounting bracket 8. This prevents gas from leaking out of these gaps, which is crucial for ensuring the sealing performance of the CO2 membrane separation and enrichment device. It helps maintain stable internal pressure and improves the efficiency of CO2 separation and enrichment. During device operation, some vibration may occur. The filling pad 13 can act as a buffer and shock absorber, reducing direct collisions and friction between the mounting bracket 8 and the outer casing 1, reducing noise, and protecting the mounting bracket 8 and the outer casing 1 from damage, thus extending the lifespan of the device. The positioning bracket 14 provides an accurate installation position for the fixed bracket 8, allowing the fixed bracket 8 to be quickly and accurately installed into the inner cavity of the outer shell 1. The combination of the support spring 15 and the fastening plate 16 forms an elastic fastening structure. The elastic force of the support spring 15 allows the fastening plate 16 to be tightly engaged with the protruding part on the left side of the fixed bracket 8. Even if vibration or slight displacement occurs during the operation of the device, the support spring 15 can automatically adjust the fastening force to ensure a stable connection of the fixed bracket 8. This elastic fastening method can avoid component damage or loosening problems that may be caused by rigid connection.

[0031] Example 3:

[0032] This utility model is as follows Figures 1-6 As shown, the fixture 8 is rectangular in shape and covers the outside of the diaphragm 5 and the gas distribution plate 6. The upper part of the fixture 8 is snap-fitted. The top of the sealing cover 9 has an inspection port, and the top of the inspection port is sealed with a cover plate.

[0033] Using the above technical solution, the fixing frame 8 is rectangularly arranged and covers the outside of the diaphragm 5 and the gas distribution plate 6, providing physical protection for the diaphragm 5 and the gas distribution plate 6 to prevent them from being damaged by collisions, scratches or other external objects, ensuring the integrity and stability of the diaphragm 5 and the gas distribution plate 6, thereby ensuring the normal operation of CO2 separation and enrichment. The upper part of the fixing frame 8 is installed by snap-fit, which makes the installation and disassembly process simple and quick, without complicated tools and operations. When it is necessary to replace or repair the diaphragm 5 or the gas distribution plate 6, the fixing frame 8 can be opened quickly, improving maintenance efficiency and reducing the downtime of the device.

[0034] The working principle of this utility model is as follows: A mixed gas containing CO2 enters the interior of the outer shell 1 through the inlet pipe 2. The guide plate 12 guides and disperses the entering mixed gas, which allows the mixed gas to flow more evenly to the diaphragm 5 and gas distribution plate 6 inside the fixed frame 8. After the mixed gas enters the interior of the fixed frame 8, it first passes through the gas distribution plate 6. The gas distribution plate 6 has multiple gas through holes 7 evenly distributed on it. These through holes further disperse the mixed gas evenly, ensuring that each diaphragm 5 can fully contact the mixed gas. The diaphragm 5 has special separation performance. It can selectively allow CO2 gas to pass through, while other gases are difficult to pass through. In this process, CO2 gas gradually passes through the diaphragm 5, achieving separation from other gases. The CO2 gas that passes through the diaphragm 5 gradually accumulates inside the fixed frame 8, and then is discharged from the outer shell 1 through the enriched gas discharge pipe 3, thus obtaining enriched CO2 gas. Other gases that do not pass through the diaphragm 5, that is, the exhaust gas, will gradually accumulate inside the fixed frame 8, and finally be discharged from the outer shell 1 through the exhaust gas discharge pipe 4 connected to the rear side of the enriched gas discharge pipe 3.

[0035] The elastic force of the support spring 15 makes the fastening plate 16 tightly clamped to the protruding part on the left side of the fixed frame 8, ensuring the stability of the fixed frame 8 during the operation of the device. At the same time, when it is necessary to disassemble the fixed frame 8, it is only necessary to overcome the elastic force of the support spring 15. The right part of the outer shell 1 is a detachable design and can be appropriately removed. When it is necessary to maintain the fixed frame 8 or replace internal parts, the fixed frame 8 can be easily pulled out or pushed in from the outer shell 1 by sliding the slider 17 on the slide rod 18, which reduces the difficulty of operation.

[0036] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0037] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A CO2 membrane separation and enrichment device, comprising an outer shell (1), characterized in that: The outer shell (1) is connected to an air inlet pipe (2) and a gas enrichment outlet pipe (3) on both sides respectively. The right rear end of the gas enrichment outlet pipe (3) is connected to a tail gas outlet pipe (4). A fixing frame (8) is installed inside the outer shell (1). The fixing frame (8) includes multiple parallel diaphragms (5). A gas distribution plate (6) is arranged between the diaphragms (5). Multiple gas through holes (7) are evenly distributed on the gas distribution plate (6). A slider (17) is fixedly installed at the bottom of the fixing frame (8). A sliding rod (18) is slidably installed at the bottom of the slider (17). The bottom of the sliding rod (18) is connected to the bottom of the inner cavity of the outer shell (1).

2. The CO2 membrane separation and enrichment device according to claim 1, characterized in that: A sealing cover (9) is provided on the top of the outer shell (1). Connecting seats (10) are fixedly installed on the front and rear sides of the top of the fixing frame (8). A snap-fit ​​block (11) is snap-fitted into the inside of the connecting seat (10) through a snap-fit ​​groove. The upper end of the snap-fit ​​block (11) is connected to the bottom of the sealing cover (9).

3. The CO2 membrane separation and enrichment device according to claim 1, characterized in that: The front and rear ends of the left side of the inner cavity of the outer shell (1) are fixedly installed with guide plates (12), and the guide plates (12) are symmetrically distributed on the outside of the right end of the air intake pipe (2).

4. The CO2 membrane separation and enrichment device according to claim 1, characterized in that: The inner cavity of the outer shell (1) is equipped with filling pads (13) on both the front and rear sides, and the inner side of the filling pads (13) is in contact with the outer side of the fixing frame (8).

5. The CO2 membrane separation and enrichment device according to claim 1, characterized in that: A positioning frame (14) is fixedly installed on the front and rear sides of the left end of the inner cavity of the outer shell (1) and on the right side of the guide plate (12). A support spring (15) is fixedly installed inside the positioning frame (14). A fastening plate (16) is fixedly installed on the right end of the support spring (15). The right side of the fastening plate (16) is engaged with the protruding part on the left side of the fixing frame (8).

6. The CO2 membrane separation and enrichment device according to claim 1, characterized in that: The fixing frame (8) is rectangular in shape and covers the outside of the diaphragm (5) and the gas distribution plate (6). The upper part of the fixing frame (8) is divided into snap-fit ​​installation.

7. The CO2 membrane separation and enrichment device according to claim 2, characterized in that: The top of the sealing cover (9) is provided with an inspection port, and the top of the inspection port is sealed with a cover plate.

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